Lauritz Knudsen DU250C, MCCB, 4 Pole, 415V AC, 25kA Breaking Capacity, 160A | Thermal-Magnetic Release| 50/60 Hz | Compact Size | Spreader Terminals are Included
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Lauritz Knudsen DU250C, MCCB, 4 Pole, 415V AC, 25kA Breaking Capacity, 160A | Thermal-Magnetic Release| 50/60 Hz | Compact Size | Spreader Terminals are Included
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen CM90634OOMO from the DU250C series is a high-performance 4 Pole Moulded Case Circuit Breaker (MCCB) engineered to provide reliable circuit protection, complete electrical isolation, & cost-effective performance for industrial, commercial, & infrastructure electrical systems. Rated at 160A & 415V AC, this MCCB safeguards power distribution networks, electrical equipment, & critical installations against overloads, short-circuit faults, & abnormal operating conditions while ensuring dependable system performance & safety.
The breaker incorporates an advanced thermal-magnetic trip mechanism that delivers dual-layer protection against electrical faults. The thermal protection element provides time-delayed tripping during overload conditions, helping prevent overheating & protecting cables, conductors, motors, transformers, & connected equipment from damage caused by prolonged overcurrent. The magnetic protection element responds instantaneously to short-circuit faults, rapidly disconnecting the affected circuit & minimizing equipment damage, downtime, & operational risks.
The 4 Pole configuration includes a dedicated neutral pole, allowing simultaneous isolation of all three phases & the neutral conductor. This feature enhances electrical safety during maintenance activities, fault isolation procedures, servicing operations, & emergency shutdowns. Complete phase & neutral isolation is particularly important in installations where full electrical disconnection is required to ensure personnel safety & equipment protection.
With a breaking capacity of 25kA, the DU250C MCCB offers an ideal balance between entry-level & high-performance MCCBs. Positioned above standard 18kA breakers & below premium 30kA+ models, it delivers enhanced fault interruption capability while maintaining cost efficiency. This makes it particularly suitable for applications with moderate to high fault levels where reliable protection & long-term system stability are critical requirements.
Designed for operation on 50/60 Hz electrical systems, the MCCB is compatible with standard global power networks. Its rugged industrial-grade construction ensures excellent mechanical durability, reliable switching performance, & long operational life even in demanding environments.
The compact & structured design enables easy integration into switchgear assemblies, distribution boards, electrical panels, & motor control centers (MCCs), helping optimize panel space while simplifying installation & maintenance.
This 160A 4 Pole MCCB is an ideal solution for applications requiring moderate to high current handling capability, complete phase & neutral isolation, dependable fault protection, & an effective balance between performance & affordability.
How the Mechanism Works
The product functions by:
• Continuously monitoring electrical current flowing through all poles
• Detecting overload conditions using a thermal trip mechanism
• Providing delayed tripping during sustained overcurrent situations
• Detecting short-circuit faults using a magnetic trip system
• Instantly disconnecting the circuit during severe fault conditions
• Protecting cables, motors, transformers, switchgear, & connected equipment from damage
• Isolating all three phases & the neutral conductor simultaneously
• Preventing overheating caused by excessive current flow
• Safely interrupting fault currents up to 25kA
• Enhancing electrical safety & operational continuity
It serves as a critical protection & isolation device for industrial & commercial power distribution systems.
Electrical Configuration
• Product Type: Moulded Case Circuit Breaker (MCCB)
• Model: CM90634OOMO
• Series: DU250C
• Pole Configuration: 4 Pole
• Rated Current: 160A
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 25kA
• Trip Unit Type: Thermal Magnetic
• Neutral Pole: Included
• Mounting Type: Panel Mounted
• Primary Function: Overload, Short-Circuit Protection & Circuit Isolation
• Application: Power Distribution & Equipment Protection
Construction & Design
Designed for durability & dependable operation:
• Compact MCCB construction
• High-strength moulded insulating enclosure
• Precision-engineered operating mechanism
• Thermal-magnetic trip technology
• Four-pole switching architecture
• Integrated neutral pole design
• Heavy-duty contact system
• Efficient arc interruption chamber
• Industrial-grade insulation materials
• Long operational service life
Safety & Protection
• Reliable overload protection
• Instantaneous short-circuit protection
• Complete phase & neutral isolation
• 25kA fault interruption capability
• Enhanced electrical safety
• Improved protection for connected equipment
• Reduced risk of electrical system damage
• Stable & dependable operation
• Reliable power distribution performance
• Balanced protection & cost efficiency
Mounting & Durability
• Easy installation in electrical panels
• Suitable for switchgear & distribution boards
• Compact footprint for efficient panel integration
• Secure mounting arrangement
• Rugged industrial-grade construction
• Designed for continuous-duty operation
• Resistant to electrical & mechanical stresses
• Reliable performance in demanding environments
• Long operational lifespan
• Minimal maintenance requirements
Application Domains
• Industrial Power Distribution Systems
• Commercial Electrical Installations
• Switchgear Panels & Control Systems
• Motor Control Centers (MCCs)
• Medium to High-Load Equipment Protection
• Infrastructure & Utility Installations
• Manufacturing Facilities
• Three-Phase Distribution Networks
• Electrical Safety & Isolation Systems
• General Industrial Applications
Key Features
• Rated current of 160A
• 4 Pole configuration for three-phase plus neutral systems
• Rated voltage of 415V AC
• Breaking capacity of 25kA
• Thermal-magnetic trip protection
• Reliable overload & short-circuit protection
• Neutral pole for complete circuit isolation
• Suitable for 50/60 Hz operation
• Rugged & durable construction
• Compact design for panel integration
• Balanced performance between cost & protection
• Long service life & dependable operation
Applications
• Industrial power distribution systems
• Commercial electrical installations
• Switchgear panels & control systems
• Motor Control Centers (MCCs)
• Medium to high-load equipment protection
• Infrastructure & utility systems
• Manufacturing facilities
• Power distribution networks
• Electrical isolation applications
• Three-phase power systems with neutral isolation
FAQs
1. What is the purpose of a 4 Pole MCCB?
Ans: It protects all three phases & includes a neutral pole, enabling complete circuit isolation for improved safety & maintenance.
2. What is the current rating of this MCCB?
Ans: The MCCB has a rated current of 160A.
3. What type of protection does it provide?
Ans: It provides thermal protection against overload conditions & magnetic protection against short-circuit faults.
4. What is the breaking capacity of this MCCB?
Ans: The breaker has a breaking capacity of 25kA for safe interruption of moderate to high fault currents.
5. Where does DU250C fit in the product range?
Ans: The DU250C series provides a mid-range 25kA breaking capacity positioned between economy-class 18kA MCCBs & high-performance 30kA+ MCCBs.
6. Where is this MCCB typically used?
Ans: It is commonly used in industrial, commercial, infrastructure, & utility systems requiring moderate to high fault protection along with complete phase & neutral isolation.
7. Why is neutral isolation important?
Ans: Neutral isolation ensures complete circuit disconnection during maintenance, servicing, & emergency shutdowns, improving overall electrical safety.
8. What are the benefits of a 25kA breaking capacity?
Ans: A 25kA breaking capacity provides enhanced fault interruption capability, improved equipment protection, greater system reliability, & a balanced combination of performance & cost efficiency.
Overview
| Rated Operational Current (A) | 160A |
|---|---|
| No. of Poles | 4P |
| Rated Operational voltage (Ue) | 415V AC |
| Rated Insulation Voltage Ui (V) | 800 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Operational Frequency (Hz) | 50/60 Hz |
| Release Type | Thermal Magnetic |
| Rated Short Circuit Breaking capacity Icu(kA) | 25kA |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 50% |
| Ambient temperature | -5°C to 55°C |
| Conformance to Standards | IS 60947-2, IEC 60947-2 & EN 60947-2 |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 5000 |
| Mechanical Life (Operating Cycles) | 15000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 140 |
| Height(mm) | 165 |
| Depth(mm) | 60 |
| Discount Percentage | Between 0-10 % |
Documents
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.
Reviews
Description
About the Product
The Lauritz Knudsen CM90634OOMO from the DU250C series is a high-performance 4 Pole Moulded Case Circuit Breaker (MCCB) engineered to provide reliable circuit protection, complete electrical isolation, & cost-effective performance for industrial, commercial, & infrastructure electrical systems. Rated at 160A & 415V AC, this MCCB safeguards power distribution networks, electrical equipment, & critical installations against overloads, short-circuit faults, & abnormal operating conditions while ensuring dependable system performance & safety.
The breaker incorporates an advanced thermal-magnetic trip mechanism that delivers dual-layer protection against electrical faults. The thermal protection element provides time-delayed tripping during overload conditions, helping prevent overheating & protecting cables, conductors, motors, transformers, & connected equipment from damage caused by prolonged overcurrent. The magnetic protection element responds instantaneously to short-circuit faults, rapidly disconnecting the affected circuit & minimizing equipment damage, downtime, & operational risks.
The 4 Pole configuration includes a dedicated neutral pole, allowing simultaneous isolation of all three phases & the neutral conductor. This feature enhances electrical safety during maintenance activities, fault isolation procedures, servicing operations, & emergency shutdowns. Complete phase & neutral isolation is particularly important in installations where full electrical disconnection is required to ensure personnel safety & equipment protection.
With a breaking capacity of 25kA, the DU250C MCCB offers an ideal balance between entry-level & high-performance MCCBs. Positioned above standard 18kA breakers & below premium 30kA+ models, it delivers enhanced fault interruption capability while maintaining cost efficiency. This makes it particularly suitable for applications with moderate to high fault levels where reliable protection & long-term system stability are critical requirements.
Designed for operation on 50/60 Hz electrical systems, the MCCB is compatible with standard global power networks. Its rugged industrial-grade construction ensures excellent mechanical durability, reliable switching performance, & long operational life even in demanding environments.
The compact & structured design enables easy integration into switchgear assemblies, distribution boards, electrical panels, & motor control centers (MCCs), helping optimize panel space while simplifying installation & maintenance.
This 160A 4 Pole MCCB is an ideal solution for applications requiring moderate to high current handling capability, complete phase & neutral isolation, dependable fault protection, & an effective balance between performance & affordability.
How the Mechanism Works
The product functions by:
• Continuously monitoring electrical current flowing through all poles
• Detecting overload conditions using a thermal trip mechanism
• Providing delayed tripping during sustained overcurrent situations
• Detecting short-circuit faults using a magnetic trip system
• Instantly disconnecting the circuit during severe fault conditions
• Protecting cables, motors, transformers, switchgear, & connected equipment from damage
• Isolating all three phases & the neutral conductor simultaneously
• Preventing overheating caused by excessive current flow
• Safely interrupting fault currents up to 25kA
• Enhancing electrical safety & operational continuity
It serves as a critical protection & isolation device for industrial & commercial power distribution systems.
Electrical Configuration
• Product Type: Moulded Case Circuit Breaker (MCCB)
• Model: CM90634OOMO
• Series: DU250C
• Pole Configuration: 4 Pole
• Rated Current: 160A
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 25kA
• Trip Unit Type: Thermal Magnetic
• Neutral Pole: Included
• Mounting Type: Panel Mounted
• Primary Function: Overload, Short-Circuit Protection & Circuit Isolation
• Application: Power Distribution & Equipment Protection
Construction & Design
Designed for durability & dependable operation:
• Compact MCCB construction
• High-strength moulded insulating enclosure
• Precision-engineered operating mechanism
• Thermal-magnetic trip technology
• Four-pole switching architecture
• Integrated neutral pole design
• Heavy-duty contact system
• Efficient arc interruption chamber
• Industrial-grade insulation materials
• Long operational service life
Safety & Protection
• Reliable overload protection
• Instantaneous short-circuit protection
• Complete phase & neutral isolation
• 25kA fault interruption capability
• Enhanced electrical safety
• Improved protection for connected equipment
• Reduced risk of electrical system damage
• Stable & dependable operation
• Reliable power distribution performance
• Balanced protection & cost efficiency
Mounting & Durability
• Easy installation in electrical panels
• Suitable for switchgear & distribution boards
• Compact footprint for efficient panel integration
• Secure mounting arrangement
• Rugged industrial-grade construction
• Designed for continuous-duty operation
• Resistant to electrical & mechanical stresses
• Reliable performance in demanding environments
• Long operational lifespan
• Minimal maintenance requirements
Application Domains
• Industrial Power Distribution Systems
• Commercial Electrical Installations
• Switchgear Panels & Control Systems
• Motor Control Centers (MCCs)
• Medium to High-Load Equipment Protection
• Infrastructure & Utility Installations
• Manufacturing Facilities
• Three-Phase Distribution Networks
• Electrical Safety & Isolation Systems
• General Industrial Applications
Key Features
• Rated current of 160A
• 4 Pole configuration for three-phase plus neutral systems
• Rated voltage of 415V AC
• Breaking capacity of 25kA
• Thermal-magnetic trip protection
• Reliable overload & short-circuit protection
• Neutral pole for complete circuit isolation
• Suitable for 50/60 Hz operation
• Rugged & durable construction
• Compact design for panel integration
• Balanced performance between cost & protection
• Long service life & dependable operation
Applications
• Industrial power distribution systems
• Commercial electrical installations
• Switchgear panels & control systems
• Motor Control Centers (MCCs)
• Medium to high-load equipment protection
• Infrastructure & utility systems
• Manufacturing facilities
• Power distribution networks
• Electrical isolation applications
• Three-phase power systems with neutral isolation
FAQs
1. What is the purpose of a 4 Pole MCCB?
Ans: It protects all three phases & includes a neutral pole, enabling complete circuit isolation for improved safety & maintenance.
2. What is the current rating of this MCCB?
Ans: The MCCB has a rated current of 160A.
3. What type of protection does it provide?
Ans: It provides thermal protection against overload conditions & magnetic protection against short-circuit faults.
4. What is the breaking capacity of this MCCB?
Ans: The breaker has a breaking capacity of 25kA for safe interruption of moderate to high fault currents.
5. Where does DU250C fit in the product range?
Ans: The DU250C series provides a mid-range 25kA breaking capacity positioned between economy-class 18kA MCCBs & high-performance 30kA+ MCCBs.
6. Where is this MCCB typically used?
Ans: It is commonly used in industrial, commercial, infrastructure, & utility systems requiring moderate to high fault protection along with complete phase & neutral isolation.
7. Why is neutral isolation important?
Ans: Neutral isolation ensures complete circuit disconnection during maintenance, servicing, & emergency shutdowns, improving overall electrical safety.
8. What are the benefits of a 25kA breaking capacity?
Ans: A 25kA breaking capacity provides enhanced fault interruption capability, improved equipment protection, greater system reliability, & a balanced combination of performance & cost efficiency.
Overview
| Rated Operational Current (A) | 160A |
|---|---|
| No. of Poles | 4P |
| Rated Operational voltage (Ue) | 415V AC |
| Rated Insulation Voltage Ui (V) | 800 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Operational Frequency (Hz) | 50/60 Hz |
| Release Type | Thermal Magnetic |
| Rated Short Circuit Breaking capacity Icu(kA) | 25kA |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 50% |
| Ambient temperature | -5°C to 55°C |
| Conformance to Standards | IS 60947-2, IEC 60947-2 & EN 60947-2 |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 5000 |
| Mechanical Life (Operating Cycles) | 15000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 140 |
| Height(mm) | 165 |
| Depth(mm) | 60 |
| Discount Percentage | Between 0-10 % |
Documents
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.